220112111222121 has 8 divisors (see below), whose sum is σ = 308929278908320. Its totient is φ = 139018175508672.

The previous prime is 220112111222117. The next prime is 220112111222131. The reversal of 220112111222121 is 121222111211022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220112111222121 - 2² = 220112111222117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220112111222131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930807993120 + ... + 1930807993233.

It is an arithmetic number, because the mean of its divisors is an integer number (38616159863540).

Almost surely, 2^{220112111222121} is an apocalyptic number.

It is an amenable number.

220112111222121 is a deficient number, since it is larger than the sum of its proper divisors (88817167686199).

220112111222121 is a wasteful number, since it uses less digits than its factorization.

220112111222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861615986375.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 220112111222121 its reverse (121222111211022), we get a palindrome (341334222433143).

The spelling of 220112111222121 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".